CN218564455U - Ball valve disk seat dustproof construction - Google Patents
Ball valve disk seat dustproof construction Download PDFInfo
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- CN218564455U CN218564455U CN202222643453.9U CN202222643453U CN218564455U CN 218564455 U CN218564455 U CN 218564455U CN 202222643453 U CN202222643453 U CN 202222643453U CN 218564455 U CN218564455 U CN 218564455U
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Abstract
The utility model relates to the technical field of ball valve dust prevention, in particular to a ball valve seat dust prevention structure, which comprises a valve core, a valve seat, a valve body and a spring seat, wherein a primary elastic adjusting component and a secondary elastic adjusting component are arranged between the valve body and the spring seat; the primary elastic adjusting assembly is a pre-tightening spring which tightly pushes against a spring seat; the secondary elastic adjusting component is arranged at the inner ring of the pre-tightening spring, and is started when the primary elastic adjusting component is weakened to supplement the elastic adjusting force of the primary elastic adjusting component.
Description
Technical Field
The utility model relates to a dirt-proof technical field of ball valve, in particular to ball valve disk seat dustproof construction.
Background
The ball valve is one of the valve field, mainly used for cutting off, distributing and changing the flow direction of the medium in the pipeline, it only needs to rotate 90 degrees operation and very small turning moment can close tightly, have wear-resisting, good leakproofness, characteristics such as long service life, have extensive application in fields such as petroleum, chemical industry, coal chemical industry, metallurgy, electric power. On some petrochemical industry or coal chemical industry devices, the requirements on the valve are very hard, and the valve is required to have the characteristics of good sealing property, long service life, high temperature and high pressure resistance and the like. Due to the structural characteristics of ball valves, the sealing valve seat of the ball valve is usually pre-tightened by a cylindrical spring or a disc spring so as to achieve the sealing specific pressure. However, in coal chemical or some petrochemical plants, the pipeline media typically contains solid particles or dust and the operating pressures and temperatures are very high. Particles or dust in the medium can enter a valve seat pre-tightening spring cavity or a sealing pair, so that the pre-tightening spring fails or the sealing pair is abraded, and the service life of the ball valve is seriously influenced. At present, the dustproof of the domestic ball valve seat generally adopts an O-shaped sealing ring or a similar elastic sealing ring to realize the dustproof of a spring cavity, but the O-shaped sealing ring and the similar elastic sealing ring are not suitable for high-temperature occasions, and the service life is limited. In order to improve the dustproof effect of the ball valve seat and prolong the service life of the ball valve, it is necessary to provide a dustproof structure for the ball valve seat.
The applicant specifically discloses a ball valve seat dustproof structure in the chinese patent with a patent application number of 201520778176.X applied for 10/8/2015, which comprises a valve core, a valve seat, a valve body and a spring seat, wherein the valve core and the valve seat are installed inside the valve body, the valve seat is provided with a sharp knife structure on a contact surface with the valve core, the valve seat is provided with three shoulders, namely a first shoulder, a second shoulder and a third shoulder, the tail wing of the first shoulder is lengthened to form a cavity with the valve body, a valve seat sealing ring, the spring seat, a pressing ring and a dust ring are arranged in the cavity, the spring seat, the pressing ring and the dust ring are sequentially installed at the first shoulder, a spring cavity is arranged on the spring seat, a pre-tightening spring is installed at the spring cavity, the valve seat sealing ring is installed at the second shoulder, and the third shoulder is connected with the valve body in a matched mode.
However, according to the reaction of the applicant, after the above technical solution is used for a long time, the pre-tightening spring gradually fails, and in the process of gradual failure of the pre-tightening spring, the sealing effect between the valve element and the valve seat gradually disappears, so that there is a need to solve the technical problem.
SUMMERY OF THE UTILITY MODEL
To above problem, the utility model provides a ball valve disk seat dustproof construction through set up second grade elasticity adjusting part on original basis, when the one-level elasticity adjusting part as the pretension spring progressively became invalid, triggers second grade elasticity adjusting part and starts, utilizes second grade elasticity adjusting part as elasticity supplementary for the disk seat tightly sealed cooperation once more with the case again, reaches the technical problem who solves the pretension spring and progressively became invalid.
In order to achieve the above object, the utility model provides a following technical scheme:
a ball valve seat dustproof structure comprises a valve core, a valve seat, a valve body and a spring seat, wherein a primary elastic adjusting assembly and a secondary elastic adjusting assembly are arranged between the valve body and the spring seat;
the primary elastic adjusting assembly is a pre-tightening spring which tightly pushes the spring seat;
the secondary elastic adjusting assembly is arranged on an inner ring of the pre-tightening spring and is started when the primary elastic adjusting assembly is weakened to supplement the elastic adjusting force of the primary elastic adjusting assembly.
As an improvement, the secondary elastic adjusting component comprises an adjusting screw, a compensating spring and a positioning ball;
the adjusting screw is movably arranged on the valve body in a penetrating way, a slot for the adjusting screw to penetrate is formed in the valve body, and a compensating spring is arranged in the slot;
the positioning ball is arranged on the side wall of the slot, and the adjusting screw is provided with a positioning groove correspondingly matched with the positioning ball;
when the secondary elastic adjusting assembly is started, the compensating spring tightly pushes the adjusting screw and the spring seat.
As an improvement, a conical groove is formed in the end part, facing the spring seat, of the adjusting screw, and a guide post matched with the groove is protruded on the spring seat;
initially, the guide post and the groove are arranged in a staggered mode, the guide post is inserted into the groove, the adjusting screw rotates, the positioning ball and the positioning groove are staggered, and the secondary elastic adjusting assembly is started.
As an improvement, a valve seat sealing ring is arranged between the spring seat and the valve seat.
As an improvement, a pressing ring and a dust ring are arranged between the primary elastic adjusting assembly and the valve body, and the pressing ring presses the dust ring on the valve body.
As an improvement, the matching part of the dust ring and the valve body is arranged in a slope.
As an improvement, an adjusting gap is arranged between the pressing ring and the valve body.
The beneficial effects of the utility model reside in that:
(1) The utility model discloses a set up the second grade elasticity adjusting part on original basis, when the first grade elasticity adjusting part as the pretension spring progressively became invalid, trigger the second grade elasticity adjusting part and start, utilize the second grade elasticity adjusting part as the elasticity and supply, make the valve seat tightly sealed fit again with the case once more, reach the technical problem who solves the pretension spring and progressively became invalid;
(2) The utility model discloses a set up conical groove and toper guide post, utilize the cooperation of guide post and recess for trigger second grade elasticity adjusting part and start, compact structure is practical.
To sum up, the utility model has the advantages of sealed stable, stable in structure, dirt is effectual, is particularly useful for the dirt-proof technical field of ball valve.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1;
FIG. 3 is an enlarged view of the structure at B in FIG. 2;
FIG. 4 is an enlarged view of the structure at C in FIG. 2;
fig. 5 is a schematic view of the three-dimensional structure of the guide post of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Example (b):
as shown in fig. 1 to 5, a ball valve seat dustproof structure includes a valve core 1, a valve seat 2, a valve body 3 and a spring seat 5, wherein a primary elastic adjusting assembly 4 and a secondary elastic adjusting assembly 6 are arranged between the valve body 3 and the spring seat 5;
the primary elastic adjusting assembly 4 is a pre-tightening spring which tightly pushes the spring seat 5;
the secondary elastic adjusting component 6 is arranged at the inner ring of the pre-tightening spring, and the secondary elastic adjusting component 6 is started when the primary elastic adjusting component 4 is weakened to supplement the elastic adjusting force of the primary elastic adjusting component 4.
Wherein, the secondary elastic adjusting component 6 comprises an adjusting screw 61, a compensating spring 62 and a positioning ball 63;
the adjusting screw 61 is movably arranged on the valve body 3 in a penetrating way, a slot 31 for the adjusting screw 61 to penetrate is formed in the valve body 3, and a compensating spring 62 is arranged in the slot 31;
the positioning ball 63 is disposed on the sidewall of the slot 31, and the adjusting screw 61 is provided with a positioning groove 611 correspondingly matched with the positioning ball 63;
when the secondary elastic adjusting assembly 6 is started, the compensation spring 62 tightly pushes the adjusting screw 61 against the spring seat 5.
Furthermore, a conical groove 612 is formed in the end, facing the spring seat 5, of the adjusting screw 61, and a guide post 51 matched with the groove 612 protrudes from the spring seat 5, wherein the described conical shape is similar to the shape of the tip of a torx screwdriver;
initially, the guiding column 51 and the groove 612 are arranged in a staggered manner, and after the guiding column 51 is inserted into the groove 612, the adjusting screw 61 is rotated, the positioning ball 63 and the positioning groove 611 are staggered, and the secondary elastic adjusting assembly 6 is started.
It should be noted that when the pre-tightening spring serving as the primary elastic adjustment assembly 4 is in failure and cannot complete the limit value of the sealing of the valve element, the guide post 51 is inserted into the groove 612, the guide post 51 and the groove 612, which are originally arranged in a staggered manner, are in guiding cooperation through a tapered slope, so that the adjustment screw 61 rotates, after the adjustment screw 61 rotates, the positioning ball 63 is staggered from the insertion slot 31, so that the adjustment screw 61 loses the limit, the elasticity of the compensation spring 62 is released, so that the adjustment screw 61 is tightly pressed against the spring seat 5, and as a supplement to the pre-tightening spring, the valve seat and the valve element can still keep abutting sealing, and the service life of the ball valve is prolonged.
In addition, spring holder 5 with be provided with valve seat sealing washer 21 between the disk seat 2, valve seat sealing washer comprises 2 ~ 4 "V" type sealing washers of compression molding, can effectively guarantee the sealed effect of back pressure of disk seat, the inclination on single inclined plane is 30 ~ 50, greatly increased dust ring's sealed area, improved dust ring's dustproof effect.
Furthermore, a pressing ring 32 and a dust ring 33 are arranged between the primary elastic adjusting assembly 4 and the valve body 3, and the pressing ring 32 presses the dust ring 33 onto the valve body 3.
Furthermore, the matching part of the dust ring 33 and the valve body 3 is arranged in a slope.
An adjustment gap is provided between the pressing ring 32 and the valve body 3.
The closed angle outer side surface inclination angle of the pressing ring is larger than the inner side surface inclination angle, the two side surface inclination angles of the triangular groove of the dust ring are different, the inclination angle of the outer side surface is larger than the inclination angle of the inner side surface, the closed angle outer side surface inclination angle of the pressing ring is the same as the inclination angle of the outer side surface of the triangular groove of the dust ring, the closed angle inner side surface inclination angle of the pressing ring is the same as the inclination angle of the inner side surface of the triangular groove of the dust ring, the effective sealing area of the dust ring is further increased, seamless connection is achieved through close fit of the closed angle and the triangular groove, and the sealing effect of the valve is remarkably improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (7)
1. The utility model provides a ball valve disk seat dustproof construction, includes case (1), disk seat (2), valve body (3) and spring holder (5), its characterized in that: a primary elastic adjusting component (4) and a secondary elastic adjusting component (6) are arranged between the valve body (3) and the spring seat (5);
the primary elastic adjusting assembly (4) is a pre-tightening spring which tightly pushes the spring seat (5);
the secondary elasticity adjusting component (6) is arranged at the inner ring of the pre-tightening spring, and the secondary elasticity adjusting component (6) is started when the primary elasticity adjusting component (4) weakens to supplement the elasticity adjusting force of the primary elasticity adjusting component (4).
2. The ball valve seat dust-proof structure according to claim 1, wherein:
the secondary elastic adjusting assembly (6) comprises an adjusting screw (61), a compensating spring (62) and a positioning ball (63);
the adjusting screw (61) is movably arranged on the valve body (3) in a penetrating manner, a slot (31) for the adjusting screw (61) to penetrate is formed in the valve body (3), and a compensating spring (62) is arranged in the slot (31);
the positioning ball (63) is arranged on the side wall of the slot (31), and the adjusting screw (61) is provided with a positioning groove (611) correspondingly matched with the positioning ball (63);
when the secondary elastic adjusting assembly (6) is started, the compensation spring (62) tightly pushes the adjusting screw (61) and the spring seat (5).
3. The ball valve seat dust-proof structure according to claim 2, wherein:
a conical groove (612) is formed in the end, facing the spring seat (5), of the adjusting screw (61), and a guide column (51) matched with the groove (612) is arranged on the spring seat (5) in a protruding mode;
initially, the guide post (51) and the groove (612) are arranged in a staggered manner, after the guide post (51) is inserted into the groove (612), the adjusting screw (61) is rotated, the positioning ball (63) and the positioning groove (611) are staggered, and the secondary elastic adjusting assembly (6) is started.
4. The ball valve seat dust-proof structure according to any one of claims 1 to 3, wherein:
and a valve seat sealing ring (21) is arranged between the spring seat (5) and the valve seat (2).
5. The ball valve seat dust-proof structure according to any one of claims 1 to 3, wherein:
a pressing ring (32) and a dust ring (33) are arranged between the primary elastic adjusting assembly (4) and the valve body (3), and the pressing ring (32) presses the dust ring (33) on the valve body (3).
6. The ball valve seat dustproof structure according to claim 5, characterized in that:
the matching part of the dust ring (33) and the valve body (3) is arranged in a slope.
7. The ball valve seat dustproof structure according to claim 5, characterized in that:
an adjusting gap is arranged between the pressing ring (32) and the valve body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222643453.9U CN218564455U (en) | 2022-10-09 | 2022-10-09 | Ball valve disk seat dustproof construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222643453.9U CN218564455U (en) | 2022-10-09 | 2022-10-09 | Ball valve disk seat dustproof construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218564455U true CN218564455U (en) | 2023-03-03 |
Family
ID=85315466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222643453.9U Active CN218564455U (en) | 2022-10-09 | 2022-10-09 | Ball valve disk seat dustproof construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218564455U (en) |
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2022
- 2022-10-09 CN CN202222643453.9U patent/CN218564455U/en active Active
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